//
// Created by Castle-Moriarty on 2025/11/4.
//

#include <iostream>
using namespace std;

int main() {
    // const
    int i = 42;
    const int &r1 = i;
    const int &r2 = 31;
    const int &r3 = r1 * 2;
    cout << r1 << endl << r2 << endl;
    return 0;
}